Hello, I have 2 Toroidal transformer for sale. they are from www.toroid.com retail is about $120+shipping. model number is #660.242 660VA 24V x 2. I measure the output votage myself which is 26.35V without any load. so this will give you aobut +/- 37V without the load. i am selling them at $60 each + $7.70 flat rate shipping in USA.